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UbuntuUSN-5078-3

HistoryOct 13, 2021 - 12:00 a.m.

Squashfs-Tools vulnerability

2021-10-1300:00:00

ubuntu.com

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

8.1 High

AI Score

Confidence

High

5.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:P/A:P

0.003 Low

EPSS

Percentile

69.3%

JSON

Releases

Ubuntu 21.04
Ubuntu 20.04 LTS

Packages

squashfs-tools - Tools to create and modify squashfs filesystems

Details

USN-5078-1 fixed a vulnerability in Squashfs-Tools. That update was
incomplete and could still result in Squashfs-Tools mishandling certain
malformed SQUASHFS files. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Richard Weinberger discovered that Squashfs-Tools mishandled certain
malformed SQUASHFS files. An attacker could use this vulnerability to
write arbitrary files to the filesystem.

OSVersionArchitecturePackageVersionFilename
Ubuntu21.04noarchsquashfs-tools< 1:4.4-2ubuntu0.3UNKNOWN
Ubuntu21.04noarchsquashfs-tools-dbgsym< 1:4.4-2ubuntu0.3UNKNOWN
Ubuntu20.04noarchsquashfs-tools< 1:4.4-1ubuntu0.3UNKNOWN
Ubuntu20.04noarchsquashfs-tools-dbgsym< 1:4.4-1ubuntu0.3UNKNOWN

OS	Version	Architecture	Package	Version	Filename
Ubuntu	21.04	noarch	squashfs-tools	< 1:4.4-2ubuntu0.3	UNKNOWN
Ubuntu	21.04	noarch	squashfs-tools-dbgsym	< 1:4.4-2ubuntu0.3	UNKNOWN
Ubuntu	20.04	noarch	squashfs-tools	< 1:4.4-1ubuntu0.3	UNKNOWN
Ubuntu	20.04	noarch	squashfs-tools-dbgsym	< 1:4.4-1ubuntu0.3	UNKNOWN